Alert archive / Colorado / Areal Flood Advisories in 2014

Areal Flood Advisory 21, NWS Denver/Boulder, CO

May 26, 2014Logan County, Phillips County, Colorado

NWS Denver/Boulder, CO issued this areal flood advisory at May 26, 2014, 1:30 PM MDT for Logan County, Phillips County, Colorado. It was in force for 90 min.

The area

The counties it named.

The facts

Issued: May 26, 2014, 1:30 PM MDT (19:30 UTC)
Expired: May 26, 2014, 3:00 PM MDT
In force: 90 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon

Counties Logan County, CO, Phillips County, CO

The radar

The Goodland radar (KGLD), 169 km from the middle of the area, began a volume at 19:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 7.5 hours before the alert went out and 97 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 52 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 1083 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this areal flood advisory went out at May 26, 10:16 AM MDT, 3 hours 14 minutes earlier.

Area forecast discussion, May 26, 10:16 AM MDT, 3 hours 14 minutes before

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Hazardous weather outlook, May 26, 10:47 AM MDT, 2 hours 43 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 26, 2:11 AM MDT	River Flood Advisory	BOU	Weld	30 hr
May 26, 2:44 PM MDT	Areal Flood Advisory	BOU	Logan	3 hr
May 26, 3:07 PM MDT	Areal Flood Advisory	BOU	Sedgwick	3 hr

Nearby

Areal Flood Advisories in Colorado, 2014 Every areal flood advisory in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.